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Published 2006
Among horticultural plants, the vine is regarded as having low nutrition requirements. A common recommendation for vineyards, depending on the soil and the grower’s objectives for the wine to be made, would be 0–50 kg/ha nitrogen, 0–25 kg/ha phosphorus, and 0 to 100 kg/ha potassium. These low requirements reflect the low levels of nutrients that are removed from the vineyard each year by the grape harvest. Fertilizers supplying the macronutrients (see soil nutrients) nitrogen, phosphorus, and potassium are normally applied in amounts giving up to 50, 25, and 100 kg/ha per year of nitrogen, phosphorus, and potassium, respectively.